The crude oil is output by the oil feed pump from the oil tank, and next enters the crude oil heat exchanger to recover part of heat after metering and then is heated to the required temperature by the heater. After that, the oil is mixed with the metered phosphoric acid or citric acid from phosphate tank in the gas mixture (M401), and then enters the conditioning tank (R401) to make the non-hydratable phospholipids in oil change into the hydratable phospholipids. Add the alkali for neutralization, and the alkali quantity and alkali solution concentration depend on the quality of the crude oil. Through the heater, the neutralized oil is heated to the temperature (90â) suitable for centrifugal separation to remove the phospholipids, FFA and other impurities in the crude oil. Then the oil goes to the washing process.

Bleaching

In normal situation , there is pigment in the crude oil , we need to using the active clay to absorb thepigment away , after 20 mins , we use the vibrating filter to filter the waste clay away . If you wantto get ligLD color oil , you need to add more active clay . That is mean , the customer can accord to hisrequirement to control the oil color. This process is carried out under the vacuum condition.

Deodorization

Usually ,there are some odors in the crude oil , it affects the quality of the edible oil . About ourrefining process , we usually use the direct steam to take odors away in the vacuum condition .General speaking there is about 0.5% water in the alkali refined oil, in the deodorization pot,thetemperature is very high , it also can finish the dehydration section.

Filtering

This process can remove off the small amount of unsettle gum soluble impurities in the degummedoil, after oil dehydrate cooling (60 Â°C), filtering again, to ensure the product oil quality. Then pumpingthe final oil into the oil tank.

3. Main section

(1) Refining section: used to P-acid de-gumming, alkali refining de-acid and water rinsing.

(2) Decoloring section: used to remove off pigments, bleaching oils and grease dehydrate.

(3) Deodorizing section: to remove off the odor components in oil.

(4) Dewax: used to remove off the wax in the oil, in order to get the high quality oil.

ShandongLeader'EGrain&Oil Machine Co.,Ltd is a large-sized joint-equityenterprise which specialize in producting edible oil mechanical equipment andit is aslo a group enterprise integrating scientificresearch, manufacturing,sales as one.Our products are exported to more than 30 countries,and regions such as Russia,India,South Afica, Ukraine, Nepal,Indonesia and so on.

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